Pet door



FIG. 1 is a front perspective view of an pet door showing my new design.

FIG. 2 is a rear perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a left side view thereof.

FIG. 6 is a right side view thereof.

FIG. 7 is a top view thereof.

FIG. 8 is a bottom view thereof; and,

FIG. 9 is an enlarged view of a portion indicated with “9” in FIG. 1 .

The broken lines illustrate portions of the pet door that form no part of the claimed design. 

CLAIM The ornamental design for an pet door, as shown and described. 